<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avator_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区 -->
      <el-form ref="loginFormRef" label-width="0px" class="login_form" :model="loginForm" :rules='loginFormRules'>
        <!-- 用户名 -->
        <el-form-item prop='username'>
          <el-input v-model="loginForm.username" prefix-icon="el-icon-user
"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop='password'>
          <el-input v-model="loginForm.password" prefix-icon="el-icon-lock" type="password" prop="name"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      // 登录表单的数据绑定对象
      loginForm:{
        username:'admin',
        password:'123456',
      },
      // 表单验证规则对象
      loginFormRules:{
        // 验证用户名是否合法
        uesrname:[
          { required: true, message: '请输入登录名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password:[
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    };
  },
  components: {},
  methods: {
    // 点击重置按钮，重置登录表单
    resetLoginForm(){
      // console.log(this)
      this.$refs.loginFormRef.resetFields();
    },
    login(){
      this.$refs.loginFormRef.validate(async boolean =>{
        if(!boolean) return
        const { data:res} = await this.$http.post('login',this.loginForm);
        console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登陆失败')
        this.$message.success('登陆成功')
        // 1.将登陆成功后的token，保存到客户端的sessionStorage中
        // 1.1 项目中出现了登陆之外的其他API接口，必须在登录之后才能访问
        // 1.2 token只应在当前网站打开期间生效，所以将token保存在sessionStorage中
        window.sessionStorage.setItem('token',res.data.token)
        // 2.通过编程式导航跳转到后台主页，路由地址是/home
        this.$router.push('/home')
      })
    }
  },
};
</script>

<style lang="less" scoped>
.login_container {
  background: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avator_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns{
  display: flex;
  justify-content: flex-end;
}
</style>